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Arunkumar Thippeswamy Phones & Addresses

  • Los Altos, CA
  • San Jose, CA
  • 150 Saratoga Ave, Santa Clara, CA 95051 (408) 554-0456
  • Cupertino, CA
  • Redwood City, CA

Publications

Us Patents

Arrangement For Controlling Network Proxy Device Traffic On A Transparently-Bridged Local Area Network Using Token Management

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US Patent:
6442610, Aug 27, 2002
Filed:
Jun 29, 1999
Appl. No.:
09/342538
Inventors:
Arun Girdharilal Khanna - Cupertino CA
Arunkumar Bhushappagala Thippeswamy - Cupertino CA
Frank Gerard Bordonaro - Los Gatos CA
Scott Allan Bales - Durham NC
Uwe Sellentin - San Jose CA
Assignee:
Cisco Technology, Inc. - San Jose CA
International Classification:
G06F 1516
US Classification:
709227, 709223, 370229, 370356, 370401
Abstract:
A transparently-bridged wide area network connecting Ethernet/IEEE 802. 3-based local area networks uses redundant proxy devices one each LAN for internetwork communications. The proxy devices on a given LAN, implemented as data link switching (DLSw) devices, mediate for proxy services by generation and maintenance of a token between the proxy devices capable of providing the corresponding proxy services. In the case of transfer of a data frame, a proxy device having received a frame from an end station determines whether any other proxy device possess a token authorizing the establishment of a circuit connection via a wide area network for transfer of the frame to another local area network. If the proxy devices determines that another proxy device possess the token, the proxy device lacking the token drops the frame. If the proxy device possesses the token, then the frame can be transferred via the wide area network.

Directory Services Caching For Network Peer To Peer Service Locator

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US Patent:
6680942, Jan 20, 2004
Filed:
Jul 2, 1999
Appl. No.:
09/347512
Inventors:
Andrew Mead - Durham NC
Arunkumar Thippeswamy - Cupertino CA
John Lautmann - Freemont CA
Mark Denny - San Jose CA
Scott Bales - Durham NC
Assignee:
Cisco Technology, Inc. - San Jose CA
International Classification:
H04L 1256
US Classification:
370392
Abstract:
A new directory service is established for a peer router receiving a data packet from an end station on a local area network connected to a port of the peer router, the peer router hereinafter being referred to as the source router. The data packet is addressed to a destination address. The source router determines that the data packet is to be encapsulated as an encapsulated packet, and the encapsulated packet routed by a peer-to-peer protocol to a destination router. The destination router then transmits the packet onto a local area network to the destination address. The source router locates the proper peer destination router by use of a database. The database is maintained on a server, where the database has entries for destination address, and an entry for a particular destination address gives the address of a peer router capable of routing a packet to that particular destination address. The database is populated by peer routers updating the database with information concerning the destination address which the peer routers can reach. The database on the server is interrogated by the source router to learn the address of a destination peer router, and an encapsulated packet is then transmitted onto a connectionless network for transmission to the destination router.

Load Sharing On Docsis

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US Patent:
7602716, Oct 13, 2009
Filed:
Dec 20, 2001
Appl. No.:
10/028069
Inventors:
Arunkumar B. Thippeswamy - Cupertino CA, US
Kushal A. Patel - Sunnyvale CA, US
Assignee:
Cisco Technology, Inc. - San Jose CA
International Classification:
G01R 31/08
US Classification:
370235, 370465
Abstract:
Methods and apparatus for efficiently distributing traffic on available best-effort service flows within a system are disclosed. According to one aspect of the present invention, a method for forwarding a packet which includes destination information and source information upstream from a source to a destination includes determining a first value associated with the packet using the destination information and the source information. A first service flow that is suitable for use to forward the packet is identified using the first value. The first service flow is one of a set of service flows between a source and a central access point. Once the first service flow is identified, the packet is sent on the first service flow. In one embodiment, the source is a subscriber unit and the central access point is a headend.

Methods And Apparatus For Synchronizing Subnet Mapping Tables

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US Patent:
7362742, Apr 22, 2008
Filed:
Jan 28, 2003
Appl. No.:
10/354690
Inventors:
Waseem A. Siddiqi - Santa Clara CA, US
Arunkumar B. Thippeswamy - Cupertino CA, US
Tai Y. Yu - Fremont CA, US
Assignee:
Cisco Technology, Inc. - San Jose CA
International Classification:
H04J 3/06
H04L 12/56
US Classification:
370350, 37039531
Abstract:
Methods and apparatus for enabling mobility of a node that does not support Mobile IP through synchronization of access point information (e. g. , subnet mapping tables) among AAPs are disclosed. In accordance with one embodiment, an authoritative access point (AAP) maintains access point information for all functioning access points (APs) and sends updates for all additions or other modifications to the continually changing access point information to other AAPs. This is accomplished by sending a copy of its local subnet mapping table to the other AAPs. The AAPs receiving the subnet mapping table then update their subnet mapping tables corresponding to the received subnet mapping table.

Arrangement For Preventing Looping Of Explorer Frames In A Transparent Bridging Domain Having Multiple Entry Points

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US Patent:
6343330, Jan 29, 2002
Filed:
May 25, 1999
Appl. No.:
09/318432
Inventors:
Arun Girdharilal Khanna - Cupertino CA
Arunkumar Bhushappagala Thippeswamy - Cupertino CA
Frank Gerard Bordonaro - Los Gatos CA
Patricia Ann Webster - Los Gatos CA
Scott Allen Bales - Durham NC
Uwe Sellentin - San Jose CA
Assignee:
Cisco Technology, Inc. - San Jose CA
International Classification:
G06F 1516
US Classification:
709249, 709227, 370401, 370404, 370405
Abstract:
A transparently-bridged wide area network connecting Ethernet/IEEE 802. 3-based local area networks uses redundant proxy devices on each LAN for internetwork communications. The proxy devices, implemented as data link switching (DLSw) devices, prevent looping of traffic such as explorer frames by sharing their MAC addresses to enable the proxy devices to recognize data packets from another proxy device. Incoming explorer frames from the wide area network are modified by performing an address substitution, where the source address in a received explorer frame is replaced with the address of the local proxy device. The proxy device then outputs the modified explorer frame onto the local area network. Any other proxy device on that same local network will then be able to detect the modified explorer frame as a frame forwarded by another proxy device, as opposed to a data frame from an end station on that local area network. Hence, redundant DLSw-type proxy devices may be implemented on a local area network while maintaining a stable and a robust communications system.
Arunkumar B Thippeswamy from Los Altos, CA, age ~56 Get Report